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(#) Obsolete Android Gradle Plugin Version

!!! WARNING: Obsolete Android Gradle Plugin Version
   This is a warning.

Id
:   `AndroidGradlePluginVersion`
Summary
:   Obsolete Android Gradle Plugin Version
Severity
:   Warning
Category
:   Correctness
Platform
:   Android
Vendor
:   Android Open Source Project
Feedback
:   https://issuetracker.google.com/issues/new?component=192708
Since
:   Initial
Affects
:   Gradle build files and TOML files
Editing
:   This check runs on the fly in the IDE editor
Implementation
:   [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-checks/src/main/java/com/android/tools/lint/checks/GradleDetector.kt)
Tests
:   [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/GradleDetectorTest.kt)
Copyright Year
:   2014

This detector looks for usage of the Android Gradle Plugin where the
version you are using is not the current stable release. Using older
versions is fine, and there are cases where you deliberately want to
stick with an older version. However, you may simply not be aware that a
more recent version is available, and that is what this lint check helps
find.

!!! Tip
   This lint check has an associated quickfix available in the IDE.

(##) Example

Here is an example of lint warnings produced by this check:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text
../gradle/libs.versions.toml:8:Warning: A newer version of
com.android.application than 8.0.0 is available: 8.0.2
[AndroidGradlePluginVersion]
gradlePlugins-agp = "8.0.0"
                    -------
../gradle/libs.versions.toml:9:Warning: A newer version of
com.android.application than 8.1.0-alpha01 is available: 8.1.0-rc01
[AndroidGradlePluginVersion]
gradlePlugins-agp-alpha = "8.1.0-alpha01"
                          ---------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Here is the source file referenced above:

`../gradle/libs.versions.toml`:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~toml linenumbers
[versions]
guavaVersion = "11.0.2"
appCompatVersion="13.0.0"
wearableVersion=" 1.2.0 "
# Test comment suppression:
#noinspection GradleDependency
multi-dex="1.0.0"
gradlePlugins-agp = "8.0.0"
gradlePlugins-agp-alpha = "8.1.0-alpha01"
gradlePlugins-agp-dev = "8.2.0-dev"
gradlePlugins-crashlytics = "2.9.2"
gradlePlugins-dependency-analysis = "1.0.0"

[libraries]
com-google-guava = { module = "com.google.guava:guava", version.ref = "guavaVersion"}
appcompat = { module = "com.android.support:appcompat-v7", version.ref = "appCompatVersion" }
wearable-support = { group = " com.google.android.support ", name =" wearable ", version.ref = " wearableVersion " }
multidex-lib = { module = "com.android.support:multidex", version.ref = "multi-dex" }

[bundles]
misc = [
    "com-google-guava",
    "appcompat",
]

[plugins]
android-application = { id = "com.android.application", version.ref = "gradlePlugins-agp" }
android-application2 = { id = "com.android.application", version.ref = "gradlePlugins-agp-alpha" }
android-application3 = { id = "com.android.application", version.ref = "gradlePlugins-agp-dev" }
crashlytics = { id = "com.google.firebase.crashlytics", version.ref = "gradlePlugins-crashlytics" }
dependency-analysis = { id = "com.autonomousapps.dependency-analysis", version.ref = "gradlePlugins-dependency-analysis" }
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You can also visit the
[source code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/GradleDetectorTest.kt)
for the unit tests for this check to see additional scenarios.

The above example was automatically extracted from the first unit test
found for this lint check, `GradleDetector.testTomlVersionCatalogFile`.
To report a problem with this extracted sample, visit
https://issuetracker.google.com/issues/new?component=192708.

(##) Suppressing

You can suppress false positives using one of the following mechanisms:

* Using a suppression comment like this on the line above:

  ```kt
  //noinspection AndroidGradlePluginVersion
  problematicStatement()
  ```

* Using a special `lint.xml` file in the source tree which turns off
  the check in that folder and any sub folder. A simple file might look
  like this:
  ```xml
  &lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;lint&gt;
      &lt;issue id="AndroidGradlePluginVersion" severity="ignore" /&gt;
  &lt;/lint&gt;
  ```
  Instead of `ignore` you can also change the severity here, for
  example from `error` to `warning`. You can find additional
  documentation on how to filter issues by path, regular expression and
  so on
  [here](https://googlesamples.github.io/android-custom-lint-rules/usage/lintxml.md.html).

* In Gradle projects, using the DSL syntax to configure lint. For
  example, you can use something like
  ```gradle
  lintOptions {
      disable 'AndroidGradlePluginVersion'
  }
  ```
  In Android projects this should be nested inside an `android { }`
  block.

* For manual invocations of `lint`, using the `--ignore` flag:
  ```
  $ lint --ignore AndroidGradlePluginVersion ...`
  ```

* Last, but not least, using baselines, as discussed
  [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).

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